DOS ain't dead

ACPITOOL v1.2 (Announce)

posted by Laaca , Czech republic, 05.04.2022, 21:20

> Test output from this port:
> 00C3B146
> 00E4B146
> 0005B146
> 0026B146
> 0047B146
> 0068B146
> 0089B146

The constant lower word looks as a bug but I believe that it is not.
The PC has a main oscillator running at 14.318MHz.
14.318 / 4 is 3.5795MHz (aka 3.58MHz). It is the basic frequency for the PC mainboard. The PC BIOS timer (18.2Hz) is also derived from 3.5795MHz
(3.5795 / 65535 = 55ms). The delay routine in the loop in the ACPItools uses the 18.2hz (55ms) BIOS ticks. So it is OK that it is synchonised with the ACPI timer.

---
DOS-u-akbar!

Complete thread:

• ACPITOOL v1.1 - Laaca, 08.03.2022, 12:13 (Announce)
  • ACPITOOL v1.1 - RayeR, 08.03.2022, 14:33
    • ACPITOOL v1.1 - KormaX, 09.03.2022, 13:28
      • ACPITOOL v1.1 - tom, 09.03.2022, 19:49
        • ACPITOOL v1.1 - KormaX, 09.03.2022, 20:54
          • ACPITOOL v1.1 - tom, 09.03.2022, 21:27
            • ACPITOOL v1.1 - KormaX, 09.03.2022, 21:35
      • ACPITOOL v1.1 - RayeR, 14.03.2022, 17:36
        • ACPITOOL v1.1 - Zyzzle, 15.03.2022, 00:54
          • ACPITOOL v1.1 - RayeR, 15.03.2022, 15:57
            • ACPITOOL v1.1 - Zyzzle, 16.03.2022, 00:50
              • ACPITOOL v1.1 - RayeR, 16.03.2022, 22:54
              • ACPITOOL v1.1 - tkchia, 03.04.2022, 22:25
                • ACPITOOL v1.1 - Zyzzle, 04.04.2022, 00:15
                • ACPITOOL v1.1 - RayeR, 04.04.2022, 18:56
                  • ACPITOOL v1.1 - tkchia, 04.04.2022, 19:55
                    • ACPITOOL v1.1 - RayeR, 04.04.2022, 20:30
                      • ACPITOOL v1.1 - tkchia, 05.04.2022, 22:33
  • ACPITOOL v1.1b - Laaca, 08.03.2022, 16:01
    • ACPITOOL v1.1b - RayeR, 09.03.2022, 02:01
  • ACPITOOL v1.2 - Laaca, 03.04.2022, 18:43
    • ACPITOOL v1.2 - RayeR, 05.04.2022, 05:12
      • ACPITOOL v1.2 - Laaca, 05.04.2022, 21:20